How to Hide Raffle Ticket Generator - Woocommerce Admin Menus

function plt_hide_raffle_ticket_generator_menus() {
	//Hide the "Raffle Ticket Generator" menu.
	remove_menu_page('woocommerce-raffle');
	//Hide the "Raffle Ticket Generator → Raffle Ticket Generator" menu.
	remove_submenu_page('woocommerce-raffle', 'woocommerce-raffle');
	//Hide the "Raffle Ticket Generator → View Customer's Ticket Numbers" menu.
	remove_submenu_page('woocommerce-raffle', 'woocommerce-raffle-tickets');
}

add_action('admin_menu', 'plt_hide_raffle_ticket_generator_menus', 11);

Where do I put this code?